US10864897B2 - Brake device for a hydraulic motor vehicle brake system - Google Patents

Brake device for a hydraulic motor vehicle brake system Download PDF

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Publication number
US10864897B2
US10864897B2 US16/335,432 US201716335432A US10864897B2 US 10864897 B2 US10864897 B2 US 10864897B2 US 201716335432 A US201716335432 A US 201716335432A US 10864897 B2 US10864897 B2 US 10864897B2
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United States
Prior art keywords
cylinder piston
actuating rod
damping element
brake device
rod unit
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US16/335,432
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US20200017091A1 (en
Inventor
Andreas Bischoff
Jefferson Colasanta
Marc Ibanez
Manfred Rüffer
Thomas Sellinger
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Continental Teves AG and Co OHG
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Continental Teves AG and Co OHG
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Assigned to CONTINENTAL TEVES AG & CO. OHG reassignment CONTINENTAL TEVES AG & CO. OHG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: IBANEZ, MARC, Rüffer, Manfred , BISCHOFF, ANDREAS, Colasanta, Jefferson, SELLINGER, THOMAS
Publication of US20200017091A1 publication Critical patent/US20200017091A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B60T11/18—Connection thereof to initiating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B60T11/165—Single master cylinders for pressurised systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/321—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration deceleration
    • B60T8/3255—Systems in which the braking action is dependent on brake pedal data
    • B60T8/326—Hydraulic systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/226—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having elastic elements, e.g. springs, rubber pads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/81—Braking systems

Definitions

  • the invention relates to a brake device for a hydraulic motor vehicle brake system.
  • An aspect of the invention is an improved brake device without vacuum booster, which allows simple and reliable detection of the zero point and at the same time emits less sound on its return.
  • An aspect of the invention proposes that a damping element is provided which permits a mechanical decoupling of the actuating rod unit from the cylinder piston, in a release direction opposite the actuation direction, by means of a reversible deformation.
  • the damping element may be arranged positionally securely and compactly in the cylinder piston, and be mechanically protected.
  • a preferred embodiment according to the invention provides that the damping element is formed as a solid element which is elastically deformable at least in the axial direction.
  • the damping element may be formed from an elastomer material, whereby a particularly high proportion of the introduced forces is transformed into heat and at the same time less stringent dimensional tolerances are required.
  • An aspect of the invention furthermore proposes that the actuating rod unit is received in the cylinder piston so as to be axially limitedly movable relative to the cylinder piston in the release direction, provoking deformation of the damping element.
  • the actuating rod unit may perform the relative movement to dissipate energy compactly in the cylinder piston.
  • the actuating rod unit is constructed from at least two pieces with an actuating rod and a fitting piece which is arranged so as to be tiltable but immovable on the cylinder piston-side end of the actuating rod, wherein a front face is formed on the fitting piece for introducing actuation forces into the cylinder piston in the actuation direction, and a rear face for introducing inertia forces from the actuating rod into the damping element in the release direction.
  • the damping element is used to positionally secure the fitting piece in the cylinder piston, whereby the number of components and the space required may be kept small, and also the force flow is improved and tolerance chains largely reduced.
  • the damping element is axially positioned and secured by a removable locking element, such as for example a locking ring, round wire circlip or similar, whereby a repair-friendly solution can be implemented with simplified installation and without complex tools and special jigs.
  • a removable locking element such as for example a locking ring, round wire circlip or similar
  • the damping element may however be positionally secured by plastic deformation of the region of the cylinder piston, such as by caulking, constricting, clinching and similar.
  • FIG. 1 shows in longitudinal section a partial view of a first embodiment of the improved brake device according to an aspect of the invention.
  • FIG. 2 shows an enlarged view of the region of the embodiment in FIG. 1 with the damping element.
  • FIG. 3 shows an enlarged view of the region with the damping element of another embodiment according to an aspect of the invention.
  • FIG. 1 A first figure.
  • the brake device 1 has a multipiece housing 2 containing a pressure chamber 3 which is filled with a brake fluid.
  • the pressure chamber 3 is here connected hydraulically (not shown) to a simulator or to at least one wheel brake for generating brake pressure.
  • the pressure chamber 3 is delimited by a cylinder piston 4 which may be axially displaced in the actuation direction B by means of an actuating rod unit 6 .
  • the cylinder piston 4 is here shown in its non-actuated starting position in which it lies against a rigid stop 14 fixed to the housing.
  • the stop 14 thus always defines the non-actuated starting position or zero position of the cylinder piston 4 .
  • the actuating rod unit 6 is coupled to a brake pedal (not shown here).
  • a brake pedal not shown here.
  • a return spring 15 clamped between the actuating rod 5 and the housing 2 is compressed; after release of the brakes, said spring supports the return of the mechanical components in the release direction L into their respective non-actuated starting positions.
  • the cylinder piston 4 After the end of the braking process and after release of the brake—for example, by the driver lifting their foot off the brake pedal—the cylinder piston 4 , together with the actuating rod unit 6 and the brake pedal, is moved quickly in the release direction L due to the spring and hydraulic forces acting thereon, until the back edge of the cylinder piston 4 hits the stop 14 .
  • a damping element 7 which can be reversibly deformed under build-up of a preload force and only deforms in the axial direction when the cylinder piston 4 hits on the stop 14 , is connected between the actuating rod unit 6 and the cylinder piston 4 , in the force flow from the actuating rod unit 6 into the cylinder piston 4 in the release direction L.
  • the actuating rod unit 6 is temporarily decoupled from the cylinder piston 4 , and moves relative thereto slightly further in the release direction L while the cylinder piston 4 remains in its zero position.
  • the actuating rod unit 6 driven by the preload force built up in the damping element 7 , moves in the actuation direction B into its non-actuated starting position shown.
  • the damping element 7 is formed as an elastomer ring element which is positionally secured in the cylinder piston 4 .
  • the scope of an aspect of the invention also includes other reversibly deformable components, such as for example metal spring elements.
  • FIG. 2 shows in enlarged scale the region around the damping element 7 of the embodiment according to an aspect of the invention shown in FIG. 1 .
  • the actuating rod unit 6 is formed of multiple pieces in the embodiment shown. It comprises a substantially pin-like actuating rod 5 and a fitting piece 8 fixed to its end on the cylinder piston side, and substantially serves to optimise the force transmission from the actuating rod 5 to the cylinder piston 4 , and at the same time allows angular compensation of the actuating rod 5 .
  • the fitting piece 8 is connected to the actuating rod 5 by caulking, in the form of several indentations 17 distributed peripherally behind the ball-like head of said actuating rod 5 , whereby it is fixed thereto in a tiltable and axially immobile fashion.
  • the fitting piece 8 is inserted in a stepped bore 11 formed in the cylinder piston 4 , and rests against the damping element 7 in the release direction L.
  • the damping element 7 is also arranged inside the stepped bore 11 in the cylinder piston 4 and axially positionally secured in the release direction L by means of a locking element 9 .
  • the fitting piece 8 is captively held in the cylinder piston 4 in a force-transmitting connection by the damping element 7 .
  • the locking element 9 is formed as a locking ring inserted in a radially inner groove 10 , and because of this design can be both installed and removed.
  • a flat disc-like front face 12 is provided on the fitting piece 8 .
  • An annular back face 13 serves to transfer forces from the actuating rod 5 into the damping element 7 in the release direction L.
  • FIG. 3 shows another embodiment of the brake device 1 according to an aspect of the invention.
  • the damping element 7 and hence also the fitting piece 8 are axially fixed in the cylinder piston 4 not by a removable locking element 9 but by a plastically deformed region 16 of the cylinder piston 4 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Braking Systems And Boosters (AREA)
  • Braking Arrangements (AREA)
  • Braking Elements And Transmission Devices (AREA)
  • Vibration Dampers (AREA)
  • Transmission Of Braking Force In Braking Systems (AREA)
US16/335,432 2016-09-26 2017-08-16 Brake device for a hydraulic motor vehicle brake system Active 2037-08-26 US10864897B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102016218421.0 2016-09-26
DE102016218421.0A DE102016218421A1 (de) 2016-09-26 2016-09-26 Bremsgerät für eine hydraulische Kraftfahrzeugbremsanlage
DE102016218421 2016-09-26
PCT/EP2017/070755 WO2018054619A1 (de) 2016-09-26 2017-08-16 Bremsgerät für eine hydraulische kraftfahrzeugbremsanlage

Publications (2)

Publication Number Publication Date
US20200017091A1 US20200017091A1 (en) 2020-01-16
US10864897B2 true US10864897B2 (en) 2020-12-15

Family

ID=59677230

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/335,432 Active 2037-08-26 US10864897B2 (en) 2016-09-26 2017-08-16 Brake device for a hydraulic motor vehicle brake system

Country Status (7)

Country Link
US (1) US10864897B2 (zh)
EP (1) EP3515766B1 (zh)
JP (1) JP6774565B2 (zh)
KR (1) KR102193488B1 (zh)
CN (1) CN109789865B (zh)
DE (1) DE102016218421A1 (zh)
WO (1) WO2018054619A1 (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017165181A (ja) * 2016-03-15 2017-09-21 ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング ブレーキ力の倍力装置
WO2018121896A1 (en) * 2016-12-27 2018-07-05 Evatec Ag Rf capacitive coupled dual frequency etch reactor
DE102017211872A1 (de) * 2017-07-12 2019-01-17 Robert Bosch Gmbh Hauptbremszylinder für eine hydraulische Fahrzeugbremsanlage
DE102018217422A1 (de) * 2018-10-11 2020-04-16 Continental Teves Ag & Co. Ohg Kolbeneinheit
DE102018221941A1 (de) 2018-12-17 2020-06-18 Continental Teves Ag & Co. Ohg Bremsgerät für eine hydraulische Kraftfahrzeugbremsanlage
DE102020109452A1 (de) * 2020-04-03 2021-10-07 Zf Active Safety Gmbh Elektrisch ansteuerbare Betätigungseinheit für eine Kraftfahrzeugbremse, Bremskraftverstärker mit einer solchen elektrisch ansteuerbaren Betätigungseinheit und Kraftfahrzeug-Bremsanlage mit einem solchen Bremskraftverstärker
DE102021213186A1 (de) 2021-11-23 2023-05-25 Continental Automotive Technologies GmbH Bremsgerät mit einer elastischen Schutzvorrichtung

Citations (13)

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JPH0334983U (zh) 1989-08-14 1991-04-05
DE19610834C1 (de) 1996-03-19 1997-06-19 Lucas Ind Plc Hauptzylinder
US20020116924A1 (en) * 1999-10-18 2002-08-29 Luk Lamellen Und Kupplungsbau Gmbh Master cylinder for use in power trains of motor vehicles
KR20030045161A (ko) 2000-11-02 2003-06-09 루카스 오토모티브 게엠베하 기계적 비상 제동 보조 장치를 포함하는 진공 브레이크부스터
DE10346674A1 (de) 2003-07-11 2005-01-27 Continental Teves Ag & Co. Ohg Elektrohydraulische Bremskraftanlage für Kraftfahrzeuge
WO2006042822A1 (de) 2004-10-15 2006-04-27 Continental Teves Ag & Co. Ohg Bremsanlage für kraftfahrzeuge
DE102009047263A1 (de) 2008-12-18 2010-06-24 Robert Bosch Gmbh Bremskraftverstärker
US20110315008A1 (en) 2010-06-23 2011-12-29 Robert Bosch Llc Pedal Rod Retaining Assembly for A Hydraulic Brake System
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DE102014212361A1 (de) 2013-06-28 2014-12-31 Advics Co., Ltd. Bremssystem für ein fahrzeug zur verbesserung der montageeignung
WO2015189061A1 (fr) 2014-06-13 2015-12-17 Valeo Embrayages Cylindre hydraulique, son procede de fabrication et systeme de commande d'embrayage ou de freinage comprenant ledit cylindre

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JP4853282B2 (ja) * 2006-12-28 2012-01-11 トヨタ自動車株式会社 車両用制動装置
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Publication number Priority date Publication date Assignee Title
JPH0334983U (zh) 1989-08-14 1991-04-05
DE19610834C1 (de) 1996-03-19 1997-06-19 Lucas Ind Plc Hauptzylinder
US20020116924A1 (en) * 1999-10-18 2002-08-29 Luk Lamellen Und Kupplungsbau Gmbh Master cylinder for use in power trains of motor vehicles
KR20030045161A (ko) 2000-11-02 2003-06-09 루카스 오토모티브 게엠베하 기계적 비상 제동 보조 장치를 포함하는 진공 브레이크부스터
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US20110315008A1 (en) 2010-06-23 2011-12-29 Robert Bosch Llc Pedal Rod Retaining Assembly for A Hydraulic Brake System
DE102011086527A1 (de) 2010-11-24 2012-05-24 Continental Teves Ag & Co. Ohg Bremsanlage und Verfahren zu deren Betrieb
KR20120138068A (ko) 2011-06-14 2012-12-24 한국델파이주식회사 브레이크 부스터
DE102014212361A1 (de) 2013-06-28 2014-12-31 Advics Co., Ltd. Bremssystem für ein fahrzeug zur verbesserung der montageeignung
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WO2015189061A1 (fr) 2014-06-13 2015-12-17 Valeo Embrayages Cylindre hydraulique, son procede de fabrication et systeme de commande d'embrayage ou de freinage comprenant ledit cylindre

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German Search Report for German Application No. 10 2016 218 421.0, dated Jul. 25, 2017-9 pages.
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Also Published As

Publication number Publication date
WO2018054619A1 (de) 2018-03-29
JP6774565B2 (ja) 2020-10-28
EP3515766A1 (de) 2019-07-31
CN109789865B (zh) 2022-04-01
EP3515766B1 (de) 2021-03-10
KR20190039320A (ko) 2019-04-10
JP2019529232A (ja) 2019-10-17
KR102193488B1 (ko) 2020-12-21
DE102016218421A1 (de) 2018-03-29
CN109789865A (zh) 2019-05-21
US20200017091A1 (en) 2020-01-16

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